geometry/curves/exampleArithmeticalDSSComputer.cpp

This example shows the basic usage of a 4-connected standard segment computer, an object devoted to the on-line recognition of 4-connected standard DSSs.

See also

Digital straight lines and segments

 
#include <iostream>
#include "DGtal/base/Common.h"
#include "DGtal/base/BasicTypes.h"
#include "DGtal/helpers/StdDefs.h"
 
#include "DGtal/geometry/curves/ArithmeticalDSSComputer.h"
 
 
using namespace std;
using namespace DGtal;
 
 
int main()
{
  
 
  using namespace Z2i;
 
  // Container of digital points
  typedef std::vector<Z2::Point> Container;
  // Iterator on the container
  typedef Container::const_iterator ConstIterator;
  // StandardDSS4 computer
  typedef StandardDSS4Computer<ConstIterator> DSSComputer;  
  // Construction of the computer
  DSSComputer theDSSComputer;    
 
  // Input points
  Container contour;
  contour.push_back(Z2::Point(0,0));
  contour.push_back(Z2::Point(1,0));
  contour.push_back(Z2::Point(1,1));
  contour.push_back(Z2::Point(2,1));
  contour.push_back(Z2::Point(3,1));
  contour.push_back(Z2::Point(3,2));
  contour.push_back(Z2::Point(4,2));
  contour.push_back(Z2::Point(5,2));
  contour.push_back(Z2::Point(6,2));
  contour.push_back(Z2::Point(6,3));
  contour.push_back(Z2::Point(6,4));
    
  // Add points while it is possible
  theDSSComputer.init( contour.begin() );
  while ( ( theDSSComputer.end() != contour.end() ) &&
          ( theDSSComputer.extendFront() ) ) {}
 
  // Trace to the standard output
  cout << theDSSComputer << endl;
 
  DSSComputer::Primitive theDSS = theDSSComputer.primitive();  
 
  // Trace to the standard output
  cout << theDSS << endl;
 
  return 1;
}
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